1 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Italian Society of Pediatrics, Rome, Italy; Division of Pediatrics, University Campus BioMedico, Rome, Italy.
2 Division of Pediatrics, University Campus BioMedico, Rome, Italy.
3 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Italian Society of Pediatrics, Rome, Italy.
4 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Division of Pediatrics, Medical School of Split, University Hospital of Split, Split, Croatia.
5 Department of Biomedical Sciences, University of Foggia, Foggia, Italy.
6 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Division of Pediatrics, Medical Faculty, University of Istanbul, Istanbul University Cerrahpaşa, Istanbul, Turkey.
7 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Division of Pediatrics, University of Medicine and Pharmacy Iuliu Haţieganu, Cluj-Napoca, Romania.
8 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Russian Academy of Pediatrics, Moscow, Russia.
9 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Department of Pediatrics, Mayanei Hayeshuah Medical Center, Bnei Brak, Israel.
10 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Department of Pediatrics, Scientific Institute "Casa Sollievo della Sofferenza", Foggia, Italy.
11 European Paediatric Association/Union of National European Paediatric Societies and Associations, Berlin, Germany; Department of Pediatrics, Scientific Institute "Casa Sollievo della Sofferenza", Foggia, Italy. Electronic address: mpm@unifg.it.